INFO: task syz-executor.1:11779 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22608 pid:11779 tgid:11778 ppid:10432 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:838 [inline]
blk_ioctl_zeroout block/ioctl.c:192 [inline]
blkdev_common_ioctl+0x1718/0x2880 block/ioctl.c:520
blkdev_ioctl+0x532/0x740 block/ioctl.c:634
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f25af67de69
RSP: 002b:00007f25b04290c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f25af7abf80 RCX: 00007f25af67de69
RDX: 0000000020000240 RSI: 000000000000127f RDI: 0000000000000008
RBP: 00007f25af6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f25af7abf80 R15: 00007ffe3120b588
Showing all locks held in the system:
3 locks held by kworker/1:0/24:
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:5/1037:
2 locks held by getty/4818:
#0: ffff88802f1c90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-fuzzer/5055:
3 locks held by kworker/1:6/5127:
#0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc900070c7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900070c7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by syz-executor.3/10162:
2 locks held by syz-executor.1/10294:
1 lock held by syz-executor.3/10920:
1 lock held by syz-executor.0/11181:
1 lock held by syz-executor.3/11364:
2 locks held by syz-executor.3/11513:
1 lock held by syz-executor.1/11779:
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:192 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1718/0x2880 block/ioctl.c:520
1 lock held by syz-executor.2/11901:
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:192 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1718/0x2880 block/ioctl.c:520
1 lock held by syz-executor.0/12053:
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:192 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1718/0x2880 block/ioctl.c:520
1 lock held by syz-executor.2/12652:
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0b2040 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
2 locks held by syz-executor.4/12739:
#0: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3498
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.0/12747:
#0: ffff88808bdcacb8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid+0x32/0x100 net/netfilter/nf_tables_api.c:10646
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11181 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:unwind_next_frame+0x457/0x2a00 arch/x86/kernel/unwind_orc.c:494
Code: 64 54 00 48 85 db 0f 84 d2 02 00 00 4d 8d 6c 9f fc 4d 39 fd 0f 83 cc 13 00 00 e8 94 60 54 00 4c 89 f9 4d 89 fc e9 55 14 00 00 <4a> 8d 1c bd b8 c0 92 8f 45 29 fc 4e 8d 64 a3 fc 49 39 dc 73 4d e8
RSP: 0018:ffffc9000426ec40 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffffff90ab1060 RCX: ffffffff90075c1c
RDX: ffff888080cfda00 RSI: 000000000000d085 RDI: 000000000000d086
RBP: 00000000000040c1 R08: ffffffff8140924e R09: 0000000000000000
R10: ffffc9000426ed80 R11: fffff5200084ddbc R12: 000000000000d086
R13: 00000000000aa001 R14: dffffc0000000000 R15: 000000000000d085
FS: 00007fc1566776c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556b4a0938 CR3: 000000008052a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__unwind_start+0x641/0x7c0 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:129
__set_page_owner+0x29/0x380 mm/page_owner.c:195
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311
__alloc_pages+0x256/0x680 mm/page_alloc.c:4569
alloc_pages_mpol+0x3de/0x650 mm/mempolicy.c:2133
alloc_pages mm/mempolicy.c:2204 [inline]
folio_alloc+0x12b/0x330 mm/mempolicy.c:2211
filemap_alloc_folio+0xdf/0x500 mm/filemap.c:984
page_cache_ra_unbounded+0x1f3/0x7c0 mm/readahead.c:247
do_sync_mmap_readahead+0x444/0x850
filemap_fault+0x7c6/0x1680 mm/filemap.c:3245
__do_fault+0x135/0x460 mm/memory.c:4396
do_read_fault mm/memory.c:4758 [inline]
do_fault mm/memory.c:4888 [inline]
do_pte_missing mm/memory.c:3745 [inline]
handle_pte_fault mm/memory.c:5164 [inline]
__handle_mm_fault+0x49e6/0x72d0 mm/memory.c:5305
handle_mm_fault+0x27f/0x770 mm/memory.c:5470
do_user_addr_fault arch/x86/mm/fault.c:1362 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x446/0x890 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fc155876ce1
Code: 00 0f 1f 84 00 00 00 00 00 48 85 f6 74 37 49 89 f0 89 f8 48 89 fa c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 5f 02 00 00 fd 74 0f c5 fd d7 c1 48 83 fe 20 76 11 85 c0 74 6d f3 0f bc c0
RSP: 002b:00007fc156675ff8 EFLAGS: 00010287
RAX: 0000000000000040 RBX: 00007fc1566760b4 RCX: 0000000000000000
RDX: 0000000020000040 RSI: 000000000000000f RDI: 0000000020000040
RBP: 00007fc156676050 R08: 000000000000000f R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000286 R12: 0000000000000006
R13: 0000000020000040 R14: 0000000000000000 R15: 00007ffc44ffe278